I cannot see it in Menu-->Edit dropdown and right click menu. But I'm sure it's installed.I tried to remove it and reinstall, more ever, I fully removed ST2 from my Mac and reinstalled it but Alignment still not working.

It might be just disabled, check > Package control: Enable packageor open (the global) "Settings-user" and check if it's listed with "ignored packages".Furthermore the keyboard shortcut might be overwritten by another package, check "Key bindings-user".

henkbb wrote:It might be just disabled, check > Package control: Enable packageor open (the global) "Settings-user" and check if it's listed with "ignored packages".Furthermore the keyboard shortcut might be overwritten by another package, check "Key bindings-user".

Tks my friend. I've taken operations by ur steps, there're no disabled packages. I removed alignment and reinstalled it but still unsolved. This just occurs on OSX, it works correctly on windows. My OS ver. is Mountain Lion 10.8.3, does this matters?